Angiotensin receptor blockers (ARBs) lower blood pressure by blocking the effects of a hormone called angiotensin II in your body. This allows your blood vessels to relax and widen. It makes your blood flow easier. ARBs also lower the amount of salt and water your body retains.
Angiotensin II in your blood stream makes your blood vessels become narrower. It becomes harder for your blood to flow through the narrow space. It also makes it harder for your heart to pump blood. This causes your blood pressure to go up. It also puts stress on your blood vessels and organs, like your brain and heart.
Angiotensin II also triggers a hormone that makes your body hold more water. More fluid in your body with less space to flow can cause your blood pressure to go up.
Less Pressure, More Health!